import telnetlib
import tkinter as tk
from tkinter.scrolledtext import ScrolledText

session = telnetlib.Telnet()

# Root object
root = tk.Tk()
root.title("Telnet")

# KNAPPA - frame
buttonFrame = tk.Frame(root)
buttonFrame.grid(row=0, column=0)

# OUTPUT - Frame
textFrame = tk.Frame(root)
textFrame.grid(row=1, column=0)

# OUTPUT - text
st = ScrolledText(root)
st.grid(row=0, column=1)
st.tag_config('in', foreground='red')
st.tag_config('out', foreground='black')

# TEXT FIELDS - variables
#..

def topen():
    global session
    session = telnetlib.Telnet("arnold", "25")
    tRead("open arnold 25\n")

def thelo():
    session.write(("helo domain.ru\n").encode('ascii'))
    tRead("helo domain.ru\n")

def tauth():
    session.write(("AUTH LOGIN\n").encode('ascii'))
    tRead("AUTH LOGIN\n")

def tusername():
    session.write(("MkBlbWlsZS5zZQ==\n").encode('ascii'))
    tRead("MkBlbWlsZS5zZQ==\n")

def tpassword():
    session.write(("cXdlcg==\n").encode('ascii'))
    tRead("cXdlcg==\n")

def tmailfrom():
    session.write(("mail from emile@domain.ru\n").encode('ascii'))
    tRead("mail from emile@domain.dom\n")

def trcpt():
    session.write(("rcpt to 1@emile.se\n").encode('ascii'))
    tRead("rcpt to 1@emile.se\n")

def tdata():
    session.write(("data\n").encode('ascii'))
    tRead("data\n")

def tdataContent():
    session.write(("From: emile@domain.ru\nSender: emile@domain.ru\nSubject telnet mejl\ncontent\n.\n").encode('ascii'))
    tRead("From: emile@domain.ru\nSender: emile@domain.ru\nSubject telnet mejl\ncontent\n.\n")

def tquit():
    session.write(("quit\n").encode('ascii'))
    tRead("quit\n")

def tRead(sentMsg):
    message = session.read_until(b'\n')
    # sent
    st.insert(tk.END, '--> ' + sentMsg, 'out')
    # received
    st.insert(tk.END, '<-- '.encode('ascii') + message, 'in')


# KNAPPAR - funktioner
bOpen = tk.Button(buttonFrame, text='open', command=topen)
bHello = tk.Button(buttonFrame, text='HELO', command=thelo)
bAuth = tk.Button(buttonFrame, text='Auth', command=tauth)
bUsername = tk.Button(buttonFrame, text='Username', command=tusername)
bPassword = tk.Button(buttonFrame, text='Password', command=tpassword)
bMailfrom = tk.Button(buttonFrame, text='Mailfrom', command=tmailfrom)
bRcpt = tk.Button(buttonFrame, text='Rcpt', command=trcpt)
bData = tk.Button(buttonFrame, text='Data', command=tdata)
bDataContent = tk.Button(buttonFrame, text='DataContent', command=tdataContent)
bQuit = tk.Button(buttonFrame, text='QUIT', command=tquit)
bExit = tk.Button(buttonFrame, text='Exit', command=root.destroy)

# KNAPPAR - pack
bOpen.pack(fill='both')
bHello.pack(fill='both')
bAuth.pack(fill='both')
bUsername.pack(fill='both')
bPassword.pack(fill='both')
bMailfrom.pack(fill='both')
bRcpt.pack(fill='both')
bData.pack(fill='both')
bDataContent.pack(fill='both')
bQuit.pack(fill='both')
bExit.pack(fill='both')

# Show frame
root.mainloop()